Texas Finance Code - FIN § 204.001. Transacting Business

(1) from transacting business at a licensed federal branch or agency in this state in accordance with federal law;

(2) that does not maintain a branch or agency in this state or conduct business from an office or location in this state from making unsecured loans in this state or loans secured by liens on real or personal property located in this state, enforcing those loans in this state, or transacting trust business in this state, to the extent permitted by other law;  or

(3) organized under the laws of a territory of the United States, Puerto Rico, Guam, American Samoa, or the Virgin Islands, the deposits of which are insured by the Federal Deposit Insurance Corporation, from establishing and operating an interstate branch in this state in its capacity as a state bank pursuant to Chapter 203.